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Finding the Fourth Proportional to 124,545.57, 171,871.97 and 70,830.51

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Solution

The fourth proportional to 124,545.57, 171,871.97 and 70,830.51 is: 97,745.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,545.57 : 171,871.97 = 70,830.51 : x
  2. Step 2: Convert to fraction form
    124,545.57/171,871.97 = 70,830.51/x
  3. Step 3: Cross multiply
    124,545.57x = 171,871.97 × 70,830.51
  4. Step 4: Simplify right side
    124,545.57x = 12,173,778,935.65
  5. Step 5: Solve for x
    x = 12,173,778,935.65/124,545.57
  6. Step 6: Final answer
    x = 97,745.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.